著者

呉羽 正昭

出版者

公益社団法人 日本地理学会

雑誌

日本地理学会発表要旨集 2007年度日本地理学会秋季学術大会

巻号頁・発行日

pp.123, 2007 (Released:2007-11-16)

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1.はじめに 日本におけるスキーの本格的移入は1911年のことである。当初,スキーは登山の手段やスポーツ競技として捉えられていた。しかしその後,レクリエーションとしてのスキー,いわゆるゲレンデスキーが発達し,1950年頃には本格的なスキー場開発が開始された。この当時は温泉地におけるスキー場開発が主体であったが,その後,農村や非居住空間へとスキー場開発が拡大した。 1980年代初頭から1990年代初頭にかけては,リゾート開発ブームとも連動し,スキー場開発は急激に大規模化した。輸送能力の高い索道が設置され,洋風レストラン・ホテルも整備された。ゲレンデでは,地形改変,人工降雪機や雪上車の導入によって快適な滑走コースがつくられた。また少積雪地域への開発もなされた。多分野からなる大都市からの資本が,こうした大量の開発に対して資本投下を行った。当時のスキー人口の急激な増加も,開発を進行させる基盤となった。 しかし,1993年頃以降,スキー人口は急激な減少を示すようになった。同時に,新規のスキー場開発は著しく減少し,また既存スキー場においても,施設の更新などがほとんど行われなくなった。さらに,スキー場の経営会社の倒産,それに伴う経営変更,スキー場自体の休業や廃業が目立ってきている。本研究では,現在の日本のスキー場に関するこうした諸問題について明らかにするとともに,空間的な側面から考察を加えたい。 分析に用いた資料は,国土交通省(旧運輸省)が監修する『鉄道要覧』(年刊)と,朝日新聞,日本経済新聞などの新聞記事である。さらに,業界誌なども参考にした。 2.スキー場開発の停滞 2003年までに,日本では約680か所のスキー場が開発されてきた。しかし,1994年以降に新規開発されたスキー場数は50以下である。これは,1980年から1993年に,230か所あまりのスキー場が誕生した事実と対照的である。また,既存のスキー場においても,1994年以降,新規にスキーリフトを設置し,拡大がなされた例はほとんどない。このように,近年の日本では,スキー場開発の停滞が顕著にみられるのである。この傾向は,主としてスキー人口の減少に基づいていると考えられる。『レジャー白書』によると,日本のスキー人口は,1993年に約1,800万人とピークを迎えたものの,現在ではその半数程度に減少している。スキーリフトの輸送人員の推移をみても,減少が著しい。その結果,スキー場経営に大きな問題が生じてきた。 3.スキー場経営の主体変更 スキー場経営の主体は索道事業であるが,スキー客数が減少した結果,日本のほとんどのスキー場では経営悪化に陥っている。バブル期の多額投資もこれに大きく影響している。こうした傾向下,1997年頃以降は,第3セクター形態の経営会社から大都市資本が撤退する例が目立っている。さらに,索道事業者の倒産もみられるようになってきた。北海道のトマム,福島県のアルツ磐梯,群馬県の川場などはその典型例である。これらの結果,索道事業者の変更が頻繁になされている。その形態はさまざまであるが,代表的なものとしては,第1に,一部の企業が問題あるスキーリゾートを複数買収し,経営する例が増えている。これには,「東急」グループ,北海道に拠点をおく「加森観光」,軽井沢に拠点のある「星野リゾート」などが該当する。第2に,外資系の投資会社によるスキー場買収が増えつつある。第3に,スキー場の再生を専門に行うコンサルタントが経営に参入するようになった。第4に,スキー場の存続を要望する市町村や住民団体による運営も存在する。こうしたスキー場経営の主体変更は,日本の全スキー場の半数程度でみられる現象である。 4.スキー場の閉鎖 スキー場の経営悪化は,その休業や閉鎖にまで至る場合もあり,2007年では,その数は100か所を超えている。とくに,小規模スキー場の廃業が目立っている。たとえば,北海道では市町村がスキー場開発をする場合が多かったが,現在までに20か所近くが廃業されている。いずれの場合も,スキー場経営による赤字が,緊迫する市町村財政を圧迫した結果である。また,西武鉄道系の開発会社「コクド」は,これまでの経営方針の変更を余儀なくされ,2007/08シーズンには同社のグループが経営する複数のスキー場の廃業がすでに決まっている。 本報告では,現在のスキー場に関するこうした諸問題を整理するとともに,それらの地域的傾向に注目し,さらには今後の展望も含めて紹介する。

著者

名和 小太郎

出版者

国立研究開発法人 科学技術振興機構

雑誌

情報管理 (ISSN:00217298)

巻号頁・発行日

vol.46, no.6, pp.403-404, 2003 (Released:2003-09-01)

参考文献数

3

著者

AKIRA TSUJI HIDEKI HIROOKA IKUMI TAMAI TETSUYA TERASAKI

出版者

JAPAN ANTIBIOTICS RESEARCH ASSOCIATION

雑誌

The Journal of Antibiotics (ISSN:00218820)

巻号頁・発行日

vol.39, no.11, pp.1592-1597, 1986 (Released:2006-04-19)

参考文献数

18

被引用文献数

12 16

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Transport of a new cephalosporin developed for oral use, FK089, has been studied with the rat everted small intestine in vitro. Uptake was found to be pH-dependent with the maximum rate at an acidic pH below 5 and with a 5-fold lower rate at pH 7.0. The shape of the pH-rate profile was very similar to that of cefixime and different from that of pH-lipophilicity profile of FK089. The saturation kinetics of the uptake of FK089 were demonstrated at pH 5.0. By correcting the nonsaturable rate process, the kinetics of the mutual inhibition of FK089 uptake by cefixime and cefixime uptake by FK089 were all consistent with competitive type inhibition. The results indicate that carrier-mediated transport is responsible for transport of cephem antibiotics without an α-amino group in the side chain at the 7-position of the cephem nucleus in the intestinal brush-border membrane.

著者

Robert D. Mare Christine R. Schwartz

出版者

Japanese Association For Mathematical Sociology

雑誌

理論と方法 (ISSN:09131442)

巻号頁・発行日

vol.21, no.2, pp.253-278, 2006-09-30 (Released:2007-08-02)

参考文献数

45

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The demographic behaviors of one generation, including marriage, divorce, fertility, and survival, create the population of families in which the next generation of children is raised. Assortative mating between men and women with varying socioeconomic characteristics is a key mechanism in establishing the families of the next generation, but differential fertility, child and parent survival, marital disruption, and parents’ socioeconomic mobility modify these marriage patterns. This article examines the demographic mechanisms through which family backgrounds are created. It presents the mathematical links between marriage patterns and the joint distribution of parents’ characteristics when their children are born and later in their lives. It illustrates these relationships using data on educational assortative mating, fertility, and mortality in the United States. Although the educational attainments of husbands and wives are strongly associated, patterns of differential fertility reinforce this relationship, resulting in an even stronger association between the educational attainments of mothers and fathers.

著者

Michael Hout

出版者

Japanese Association For Mathematical Sociology

雑誌

理論と方法 (ISSN:09131442)

巻号頁・発行日

vol.21, no.2, pp.237-252, 2006-09-30 (Released:2007-08-02)

参考文献数

33

被引用文献数

1

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The implications of maximally maintained inequality (MMI) and its alternative essentially maintained inequality (EMI) for inequality of educational opportunity within societies and over time in those societies are well-understood and frequently addressed in the literature. MMI and EMI may also have implications for cross-national differences. The ISSP “Social Inequality” module fielded 1999-2001 provides highly comparable data useful for assessing hypotheses about cross-national variation in inequality of educational opportunity. Patterns of inequality of educational opportunity in the ISSP data are consistent with MMI and EMI: the association between socioeconomic background and education falls as the proportion of the labor force with postsecondary education rises.

著者

Richard Breen

出版者

Japanese Association For Mathematical Sociology

雑誌

理論と方法 (ISSN:09131442)

巻号頁・発行日

vol.21, no.2, pp.215-236, 2006 (Released:2007-08-02)

参考文献数

17

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Hypotheses about social fluidity in log-linear models of social mobility are hypotheses about patterns of odds ratios; yet odds ratios are only indirectly related to the interaction parameters of log-linear models. I propose rewriting such models so that the interaction parameters are equal to log odds ratios. This allows straightforward tests of difference and similarity between the odds ratios of different mobility tables. The approach is illustrated using three cross-nationally comparative data sets.

著者

林 悠太 久保 晃

出版者

理学療法科学学会

雑誌

理学療法科学 (ISSN:13411667)

巻号頁・発行日

vol.25, no.1, pp.143-146, 2010 (Released:2010-03-26)

参考文献数

4

被引用文献数

1 1

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〔目的〕本研究の目的は,高齢入院患者の生活意欲とADL,体格との関連を明らかにすることである。〔対象〕対象者は,Functional Independent Measure(以下FIM)の食事項目が5点以上であった高齢入院症例71例(回復期リハ病棟:男12例,女24例,79.6±11.1歳 慢性期病棟:男10例,女25例,83.2±7.6歳)である。〔方法〕生活意欲はVitality Index scoreより求め,8点以上を高得点群,7点以下を低得点群の2群に分類し,FIMとBody Mass Index(以下BMI)を求めて分析した。〔結果〕その結果,回復期ではFIMすべての項目で群間に有意差が認められ,慢性期では運動項目の整容・トイレ動作・排泄項目とすべての認知項目,BMIに有意差が認められた。〔結語〕回復期ではADL能力全般が,慢性期では身だしなみや排泄といった人間としてごく当たり前の動作能力が,生活意欲と関連してくると考えられる。

著者

金 明哲

出版者

日本行動計量学会

雑誌

行動計量学 (ISSN:03855481)

巻号頁・発行日

vol.36, no.2, pp.89-103, 2009 (Released:2010-06-29)

参考文献数

27

被引用文献数

2 3

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In this research, as a basis of studies regarding when certain works were written, an estimation was attempted using the works of Ryunosuke Akutagawa. In the experiment, two types of data sets were created from the text with part-of-speech tagging, and a comparative analysis was performed using three methods: Linear Regression, Support Vector Regression, and Random Forest Regression. As a result, when the works were written was estimated with rather high accuracy. The average of absolute value of estimation error and standard deviation was approximately 1.4 years. The order of high accuracy of estimation was Random Forest Regression, Support Vector Regression, and Linear Regression.

著者

Yu-Ching Chou Chi-Hong Chu Mei-Hsuan Wu Giu-Cheng Hsu Tsan Yang Wan-Yun Chou Hsin-Ping Huang Meei-Shyuan Lee Cheng-Ping Yu Jyh-Cherng Yu Chien-An Sun

出版者

Japan Epidemiological Association

雑誌

Journal of Epidemiology (ISSN:09175040)

巻号頁・発行日

vol.21, no.5, pp.329-336, 2011-09-05 (Released:2011-09-05)

参考文献数

50

被引用文献数

11 16

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Background: B vitamins, including vitamin B6, are coenzymes that are important for DNA integrity and stability. Deficiencies in B vitamins may promote tumor carcinogenesis.Methods: We examined the association of dietary vitamin B6 intake with overall breast cancer risk and breast cancers stratified by hormone receptor status. This case-control study included 391 breast cancer cases and 782 control subjects enrolled at the Tri-Service General Hospital in Taipei, Taiwan. Energy-adjusted intake of vitamin B6 was derived from a food frequency questionnaire. Odds ratios (ORs) and 95% confidence intervals (CIs) were estimated using logistic regression.Results: As compared with women in the lowest tertile, the multivariate-adjusted ORs for breast cancer among women in the second and highest tertiles of vitamin B6 intake were 0.78 (95% CI, 0.64–2.52) and 0.64 (0.26–0.92), respectively. In addition, higher vitamin B6 intake was associated with a significantly lower risk of developing ER-negative breast tumors.Conclusions: Our findings suggest that higher intake of vitamin B6 is associated with a reduction in breast cancer risk, particularly ER-negative tumors.

著者

荒尾 与史彦 小柳 潤 武田 真一 宇都宮 真 川田 宏之

出版者

一般社団法人 日本機械学会

雑誌

日本機械学会論文集A編 (ISSN:18848338)

巻号頁・発行日

vol.77, no.776, pp.619-628, 2011 (Released:2011-04-25)

参考文献数

17

被引用文献数

7 8

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Strict geometrical stability is required for the precise structures like telescopes. Unpredictable out-of-plane deformation is a serious problem when we use CFRP (Carbon Fiber Reinforced Plastic) laminate to the precise structure. This out-of plane deformation of symmetrical CFRP laminate mainly arise from combination effects of ply angle misalignment and temperature change. We discussed here is effective stacking sequence of CFRP laminate that mitigate the deformation caused by the ply angle misalignment. The analysis based on laminate theory was performed to calculate the thermal deformation. In this analysis, the random numbers were added to each layers as ply angle misalignments. The analytical results were obtained statistically by Monte Carlo method. Mohr's curvature circle was also incorporated to evaluate the deformation as P-V (peak to Valley) values. We performed the analysis with various stacking sequence. It was calculated that the symmetric cross-ply laminates deformed 10 times larger than the other quasi-symmetric laminates. In the case of the total ply number is less than 12, the stacking sequence in the laminate has a significant effects on the thermal deformation. However, if the total number ply number is more than 24, effect of stacking sequence on the thermal deformation becomes negligible. We also discussed the geometrical stability of CFRP mirror by considering unavoidable ply angle misalignment. It was presumed that the CFRP mirror can be used for wide range of wave length when the back structure was attached to CFRP laminates.

著者

小林 晋一郎 木下 靱彦 本間 義郎 島崎 能理子 川畑 守 黒豆 照雄 志村 介三

出版者

社団法人 日本口腔外科学会

雑誌

日本口腔外科学会雑誌 (ISSN:00215163)

巻号頁・発行日

vol.28, no.6, pp.891-902, 1982-06-20 (Released:2011-07-25)

参考文献数

77

著者

小林 晋一郎

出版者

社団法人 日本口腔外科学会

雑誌

日本口腔外科学会雑誌 (ISSN:00215163)

巻号頁・発行日

vol.30, no.8, pp.1087-1098, 1984-08-20 (Released:2011-07-25)

参考文献数

34

被引用文献数

1 1

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In the present study, inorganic pyrophosphate (PPi), Mg, alkaline-phosphate activity (Al-pase), Ca, Pi and total protein in submandibular and parotid saliva were measured in 19 sialolithiasis and 61 age-matched control subjects in order to understand the possilbe etiologic factor (s) or disposition of this disease. The results can be summarized as follows:1. Saliva constituents in control subjects1) The concentrations of PPi and Mg, which are known to be potent inhibitors of calcium phosphate crystal formation, were significantly low in the submandibular gland as compared to those in the parotid. Since available clinical and statistical data on this kind of investigation so far performed show that sialolithiasis occurs most commonly in the submandibular gland, the lower inhibitory activity in this gland might be responsible for the formation of calculus.2) The concentrations of PPi, Ca and Pi in the submandibular saliva increased with age, while no distinct relationship was demonstrated between the concentrations of PPi, Ca and Pi and age. This finding seems not coincident with the clinical observation that sialolitiasis occurs most frequently in the second, third and fourth decades of life.3) As for saliva constituents, no significant difference was observed between males and females. This finding well coincided with the clinical observation that no sex difference exists in the incidence of sialolithiasis.2. Saliva constituents in patients with sialolithiasis1) With regards to all parameters examined, there was no significant difference between saliva constituents from non-diseased submandibular glands of sialolithiatic patients and those from normal subjects. This suggests that the submandibular gland in the non-diseased side functions normally even in patients with sialolithiasis.2) The diseased submandibular glands had significantly lower concentrations of Mg and Ca as compared to normal glands, which may indicate that some local disturbancees occur in the diseased submandibular glands from patients with sialolithiasis.3) The Al-pase activity in the diseased submandibular saliva from patients with sialolithiasis was considerably higher than non-diseased submandibular saliva from sialolithiasis and control subjects, In addition, the concentration of PPi showed a negative correlation to the Al-pase activity (r=0.822, P<0.05). It is assumed tha PPi may rapidly decomposed by high Al-pase activity, ultimately leading to crystal formation together with low Mg levels in the affected submandibular glands.

著者

溝上 雅史 田中 榮司 茶山 一彰 田中 靖人 黒崎 雅之 泉 並木 荒瀬 康司 熊田 博光 今関 文夫 横須賀 收 工藤 正俊

出版者

一般社団法人 日本肝臓学会

雑誌

肝臓 (ISSN:04514203)

巻号頁・発行日

vol.51, no.5, pp.243-260, 2010 (Released:2010-06-09)

参考文献数

178

被引用文献数

1

著者

時実 象一 和田 光俊

出版者

国立研究開発法人 科学技術振興機構

雑誌

情報管理 (ISSN:00217298)

巻号頁・発行日

vol.50, no.11, pp.745-751, 2008 (Released:2008-02-01)

参考文献数

16

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電子ジャーナルの普及,Google Scholarの出現などの環境変化に対し,世界の二次情報データベースは変革を迫られている。付加価値の高いコンテンツを提供するCASやWeb of Scienceは従来路線をさらに強化する方向である。Web of Scienceを追うScopusは,研究者個人の評価に力を入れており,Citation Tracker, Author Identifierやh-indexを導入している。他のデータベースも付加価値を高めようとしており,Inspecは各種索引に力を入れ,CSA Illuminaは論文中の図表の索引を始めた。電子ジャーナル系では,雑誌取次業者Swetsは図書館に密着したデータベース提供に力を入れている。さらに学会出版社独自のScitopia検索サービスも試みられている。

著者

小村 健 武宮 三三 嶋田 文之

出版者

社団法人 日本口腔外科学会

雑誌

日本口腔外科学会雑誌 (ISSN:00215163)

巻号頁・発行日

vol.32, no.2, pp.303-310, 1986-02-20 (Released:2011-07-25)

参考文献数

19

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Carcinoma of the parotid gland with extracapsular extension and recurrent carcinoma of the gland, which is frequently much more advanced than is clinically discernible, are most difficult and challenging problems to treat.Four patients underwent aggressive radical surgery to achieve adequate margins. In addition to radical parotidectomy and neck dissection, surgery included resection of the masseter muscle, medial and lateral pterygoid muscles, temporal muscle, skin, mandible, temporal bone and other involved structures such as parapharyngeal space.In this series, one tumor was previously untreated and the remaining 3 were recurrent after initial surgery. Histologic type of the tumors was carcinoma in pleomorphic adenoma in 2 patients, adenoid cystic carcinoma in 1, and high-grade mucoepidermoid carcinoma in 1. Two of the recurrent tumors had become more highly malignant than the initial tumors.Histopathologically skin overlying the parotid gland was involved in 2 patients, masticatory muscles in 3, capsule of the temporomandibular joint in 1 and parapharyngeal space in 1. No bony involvement was revealed in the surgical specimens. These histologic findings were satisfactorily correspondent to those of the preoperative CT scan. Nodal involvement of the tumor was histologically confirmed in 3 patients, and metastatic nodes spread in the deep jugular chain from the base of the skull to the middle jugular portion and the spinal accessory chain. In addition to the direct extension of the primary tumor, these nodal findings demanded the dissection of the parapharyngeal space in conjunction with the resection of ascending ramus of the mandible.Three of 4 radically parotidectomized patients were alive with no evidence of disease from 6 to 28 months postoperatively. One patients died of local recurrence 29 months after the operation.

著者

小村 健 和田 重人 小野 貢伸 嶋田 文之

出版者

社団法人 日本口腔外科学会

雑誌

日本口腔外科学会雑誌 (ISSN:00215163)

巻号頁・発行日

vol.42, no.6, pp.560-565, 1996-06-20 (Released:2011-07-25)

参考文献数

20

被引用文献数

1

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In squamous cell carcinomas of the oral cavity, spinal accessory lymph node (SALN) metastasis develops infrequently, and the prognosis of the patients with SALN metastasis is extremely poor.In this paper, patients with SALN metastasis of squamous cell carcinomas of the oral cavity were studied retrospectively. The SALN metastasis was histopathologically confirmed in 9 (5.0%) of 179 patients who underwent radical or modified radical neck dissection. The primary sites of their tumors were the tongue in 6 patients, the lower gingiva in 2, and the buccal mucosa in 1. The risk of SALN metastasis was related to the tumor spread into the oropharynx and the differentiation of the tumor, but not related to the T stage. In the patients with SALN metastasis, the mean total number of involved nodes on the affected side of the neck was 9.4. All of these patients had metastases in multiple groups of neck lymph nodes, and the majority had metastases in the upper and middle jugular groups of nodes. The mean number of involved SALNs was 2.0, and the mean size of these nodes was 0.52 cm in diameter.The outcome of treatment in the patients with SALN metastasis was poor: 1 patient was alive with no evidence of disease, and 8 patients died of disease with an average duration of survival of 8.0 months after neck dissection.To improve the prognosis of patients with SALN metastasis, both postoperative irradiation to the neck and intensive adjuvant chemotherapy should be employed.

著者

小村 健

出版者

社団法人 日本口腔外科学会

雑誌

日本口腔外科学会雑誌 (ISSN:00215163)

巻号頁・発行日

vol.41, no.7, pp.593-610, 1995-07-20 (Released:2011-07-25)

参考文献数

75

被引用文献数

1 4

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The parapharyngeal space is frequently invaded by head and neck cancer throughdirect extension, lymph node metastasis, and neural spread.“Parapharyngeal dissection” is a method for en bloc resection of theparapharyngealspace.To clarify the incidence, pattern, and risk factors of parapharyngeal involvement, 75 pa-tients (Stage II: 8, Stage lII: 22, Stage N: 45) who underwent parapharyngeal dissection inconjunction with ablation of the primary tumor and radical neck dissection were studiedclinicopathologically. In addition, the clinical usefulness of parapharyngeal dissection wasevaluated.The results were as follows:1. Tumor involvement of the parapharyngeal space was histologically confirmed in 46 pa-tients (61.3%). The primary sites of their tumors were the oral cavity in 27 patients (61.3%), the oropharynx in 9 (60.0%), the major salivary glands in 7 (50.0%), and othersites in 3 (100%).2. The histologic patterns of the parapharyngeal involvement were direct extension of theprimary tumor in 24 patients, nodal involvement in 8, neural spread in 3, direct exten-sion combined with nodal metastasis in 10, and nodal involvement combined with neural spread in 1.3. The risk of direct extension was significantly related to the T category, clinical stage, growth pattern, depth of invasion, and lymphatic invasion of the primary tumor.4. There were six routes of direct extension of the tumor into the parapharyngeal space: anteromedial inferior, anteromedial superior, medial central, anterolateral, postero-lateral, and inferior.5. Nodal spread was histologically observed in the parapharyngeal nodes, retropharyngeal nodes, and the extended nodes of Kiittner.6. The risk of nodal involvement was significantly related to the clinical stage of the tumor.7. Neural spread occurred via the lingual and hypoglossal nerves, and the risk of spread wasrelated to perineural invasion by the primary tumor.8. Based on X-ray CT scans perfomed preoperatively in 69 patients, direct extension was cor-rectl ydiagnosd in 73.9%, nodal involvement in 98.6%, and neural spread in 0 %.9. The 5-year locoregional control rate was 82.0% in this series, and 77.4% in patients withhistogically positive parapharyngeal involvement. The cause-specific 5-year survivalrate was 66.1% in this series, and 56.9% in patients with histologically provenparapharyngeal involvement. These results suggested that parapharyngeal dissection wasery useful in the management of patients with parapharyngeal involvement.

著者

小村 健 原田 浩之 前田 顕之

出版者

一般社団法人 日本口腔腫瘍学会

雑誌

日本口腔腫瘍学会誌 (ISSN:09155988)

巻号頁・発行日

vol.12, no.4, pp.391-395, 2000-12-15 (Released:2010-05-31)

参考文献数

7

被引用文献数

3 3

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顎関節部の悪性腫瘍は極めてまれであり, 顎関節に原発するもの, 周囲組織に発生し顎関節に進展するもの, および顎関節に転移するものに大別される。症状は他の顎関節疾患に類似しているが, 進行は急速である。診断には詳細な病歴聴取, 視診, 触診, CT, MRI, 99mTcや67Gaシンチなどの画像診断が必須であり, 確定診断には生検ないし細胞診を必要とする。その中で超音波ガイド下穿刺吸引細胞診は有用である。治療は, 原発性腫瘍では拡大手術が第一選択となり, 経耳下腺的アプローチが有用である。進展性や転移性腫瘍では原発腫瘍の状況により放射線治療, 化学療法あるいは手術を選択し, 転移性腫瘍でもQOLの向上のための手術を検討すべきである。

著者

小村 健 武宮 三三

出版者

社団法人 日本口腔外科学会

雑誌

日本口腔外科学会雑誌 (ISSN:00215163)

巻号頁・発行日

vol.31, no.7, pp.1749-1754, 1985-07-20 (Released:2011-07-25)

参考文献数

38

被引用文献数

1 1

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A 56 year-old male patient with adenoid cystic carcinoma of the right sublingualgland origin was reported. In this case, extensive local resection of the tumor including the dissection of the parapharyngeal space along the lingual and hypoglossal nerves was carried out in combination with radical neck dissection. Surgical treatment was followed by 60 Gy of radiotherapy.He was free of disease during the follow-up period of 9 months.Adenoid cystic carcinoma arising in the sublingual gland accounted for 35 cases reported in the literature for the period of 1930-1984.

著者

小村 健 武宮 三三 牧野 修治郎 嶋田 文之

出版者

社団法人 日本口腔外科学会

雑誌

日本口腔外科学会雑誌 (ISSN:00215163)

巻号頁・発行日

vol.39, no.4, pp.445-451, 1993-04-20 (Released:2011-07-25)

参考文献数

18

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Mandibular reconstruction remains one of the most challenging problems for the head and neck surgeon. Various methods of mandibular reconstruction have been described, including free bone grafts, osteomyocutaneous flaps, free vascularized bone grafts, reimplantation of treated mandibles, and reconstruction using alloplastic materials with particulate cancellous bone and marrow grafts.This paper describes the author's experience using a Dacron-urethane mandibular mesh tray filled with particulate cancellous bone and marrow for mandibular reconstruction.Six patients underwent resection of the mandible for malignant tumors, 7 for benign tumors, and 1 for radiation osteomyelitis.Immediate reconstruction was performed in 7 patients, and 5 of the 7 were successful. Delayed reconstruction was performed in another 7 patients, and 5 of the 7 were successful. The overall success rate was 71%. Mandibular reconstruction was successfully accomplished even following radiotherapy in 4 of 6 patients. The majority of the failures occurred in the first 10 days following surgery and the major factor in failure seemed to be related to intraoperative wound infection.The Dacron-urethane mandibular mesh tray has the advantage of being malleable but stiff, and can be easily cut with scissors to fit the defect. The tray is radiolucent, faciliting follow-up examinations by routine roentgenograms and radionuclide scans. It can be used either before or after radiotherapy.This reconstructive procedure is not technically difficult and does not require expertise in microvascular surgery. In selected patients, this procedure may significantly contribute to cosmetic and functional improvement following radical surgery of the mandible.